Compliance Statements - Printronix Auto ID T8204 User Manual

Compliance Statements

The Printronix Online Data Validator 2D gathers data per the ISO/ANSI method of verification to perform
practically all the industry standard bar code quality parameter calculations. These include all ISO/ANSI
method parameters for 1-D and 2-D barcodes along with decoding the symbol.
Reflectance Compliance – 660 nm Wavelength (Red) Light
The reflectance values embedded in the calibration symbol supplied with each ODV2D are measured
using a calibrated ISO compliant verifier.
ISO/ANSI Method Compliance
The Printronix ODV2D gathers data and performs all ISO/ANSI method parameter calculations per the
ISO/IEC 15416 (1-D) and ISO/IEC 15415 (2-D), and ANSI X3.182-1990 methodologies with a few special
considerations and exceptions. The ODV2D also conforms to ISO/IEC 15426-1 and 15426-2 per the
requirements specified in Section 2 of both documents, with some exceptions.
The exceptions and considerations are related to the instrument's design and mission. The design
incorporates a proprietary image scanner that has been assembled with a fixed focal length to produce a
calibrated dot resolution for measuring 10mil of larger minimum X-dimensions. Further, the measurement
accuracy of some grading parameters may be lower than identified in the standard.
The mission is to not only analyze bar code quality, but also to detect any printer failures, process failures
or media problems. For maximum performance and to conform to quality specifications, a fixed mounting
distance and angle are required.
An image scan resolution that can detect errors of the particular print method is highly recommended.
The scan resolution used may or may not correspond to the recommendations in various specifications
that it be related to the X dimension of a particular symbol, but instead correspond to the printer's
resolution or some other parameter(s) critical in the application. A major philosophy of an on-line
verification system is; if the printer and/or process is operating correctly and the media has proper
reflectance properties, the best print quality for that particular print method and material is achieved by
definition.
Special Considerations
1. Final system tests are performed at the proper focus distance and at an angle of 27 degrees. Units
with common focus distances are checked to yield analysis results within 10% of the ISO verifier
accuracy requirements.
2. All ODV2D's use the same light source with a wavelength of 624 +/- 10 nm. Therefore, any ISO/ANSI
overall symbol grade calculated by an ODV includes 624 as the wavelength portion of the grade.
Exceptions to the ISO/ANSI Method
The Defects calculation does not include the quiet zone area. A separate quiet zone check is implemented
to more easily isolate print problems vs. setup problems in an on-line environment.